3487results about How to "Easy to track" patented technology

Mechanisms have been developed for securing computational systems against certain forms of attack. In particular, it has been discovered that, by maintaining and propagating taint status for memory locations in correspondence with information flows of instructions executed by a computing system, it is possible to provide a security response if and when a control transfer (or other restricted use) is attempted based on tainted data. In some embodiments, memory management facilities and related exception handlers can be exploited to facilitate taint status propagation and / or security responses. Taint tracking through registers of a processor (or through other storage for which access is not conveniently mediated using a memory management facility) may be provided using an instrumented execution mode of operation. For example, the instrumented mode may be triggered by an attempt to propagate tainted information to a register. In some embodiments, an instrumented mode of operation may be more generally employed. For example, data received from an untrusted source or via an untrusted path is often transferred into a memory buffer for processing by a particular service, routine, process, thread or other computational unit. Code that implements the computational unit may be selectively executed in an instrumented mode that facilitates taint tracking. In general, instrumented execution modes may be supported using a variety of techniques including a binary translation (or rewriting) mode, just-in-time (JIT) compilation / re-compilation, interpreted mode execution, etc. Using an instrumented execution mode and / or exception handler techniques, modifications to CPU hardware can be avoided if desirable.

A tracking heliostat array comprises a plurality of optical elements. The tracking heliostat array further comprises a frame separated from the optical elements. Each of the optical elements has an orientation with respect to the frame. The tracking heliostat array further comprises a plurality of supports coupled to at least one of the optical elements. The tracking heliostat array further comprises a turnbuckle coupled to at least one of the supports and to the frame. Rotation of the turnbuckle causes the corresponding support to be displaced relative to the frame. The orientation of the optical element relative to the frame is adjustable. The tracking heliostat array further comprises a traveling actuator configured to rotate at least one of the turnbuckles. The tracking heliostat array further comprises a positioning mechanism supporting the traveling actuator. The positioning mechanism is configured to move the traveling actuator from a first selected turnbuckle to a second selected turnbuckle.

Embodiments of the present invention provide a tracking apparatus (100) and method that are operable to efficiently track an animal. The tracking apparatus (100) is operable to be worn by an animal, determine its current geographic location, and transmit information relating to its current geographic location to an external device such as a portable navigation unit (200). The navigation unit (200) is operable to display a representation of the geographic location of the tracking apparatus (100) for consideration by a user.

An image processing apparatus for tracking faces in an image stream iteratively receives a new acquired image from the image stream, the image potentially including one or more face regions. The acquired image is sub-sampled (112) at a specified resolution to provide a sub-sampled image. An integral image is then calculated for a least a portion of the sub-sampled image. Fixed size face detection (20) is applied to at least a portion of the integral image to provide a set of candidate face regions. Responsive to the set of candidate face regions produced and any previously detected candidate face regions, the resolution at which a next acquired image is sub-sampled is adjusted.

A valve prosthesis device is disclosed suitable for implantation in body ducts. The device comprises a support stent comprised of a deployable construction adapted to be initially crimped in a narrow configuration suitable for catheterization through the body duct to a target location and adapted to be deployed by exerting substantially radial forces from within by means of a deployment device to a deployed state in the target location, and a valve assembly comprising a flexible conduit having an inlet end and an outlet, made of pliant material attached to the support beams providing collapsible slack portions of the conduit at the outlet. The support stent is provided with a plurality of longitudinally rigid support beams of fixed length. When flow is allowed to pass through the valve prosthesis device from the inlet to the outlet the valve assembly is kept in an open position, whereas a reverse flow is prevented as the collapsible slack portions of the valve assembly collapse inwardly providing blockage to the reverse flow. The device is configured so that retrograde flow will be altered from laminar flow and directed towards the leaflets to effect closing. The device can be deployed in a native heart valve position using a deployment catheter advanced through a body lumen such as a blood vessel, including an aorta.